HC/Splash News

Sienna Miller's signature is a tousled, "undone" look, but this recent style (or lack thereof) has me wondering if she's lost her touch.

The "G.I. Joe" star's hair is vibrant and healthy-looking, but it's hard to focus on the positive with those random pieces floating around her face. They make her locks seem fine and stringy.

I'm all for messy updos, but also believe there's a fine line between flattering and faux pas.